EXHIBIT 10.31

RELEASE AND SEPARATION AGREEMENT

This Release and Separation Agreement (the “Agreement”) is made and entered into by and between Synaptics Incorporated (“Synaptics”) and David B. Long (“Long”).

RECITALS

COVENANTS

In consideration of the mutual promises in this Agreement, it is agreed as follows:

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In addition, Synaptics shall reimburse Long for up to six (6) months following the Termination Date, the premium for Long and his dependents, if any, for continued health insurance benefits coverage currently provided to him inclusive of medical, dental and vision coverage under the Consolidated Omnibus Budget Reconciliation Act of 1986 (“COBRA”) provided that Long applies for such COBRA benefits (“COBRA Payments”). Synaptics shall provide Long with the right to elect whatever Group Health Plan Continuation Coverage to which Long and his dependents, if any, are entitled, if at all, pursuant to COBRA. Following the period during which Long is entitled to receive reimbursements for COBRA Payments, payments for coverage pursuant to COBRA will be Long’s full and exclusive responsibility and Long acknowledges Synaptics will not be paying any portion of the COBRA premium payments for Long or his dependents, if any.

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(a) Long for himself and, as applicable, his agents, attorneys, successors, and assigns, hereby fully, irrevocably, and unconditionally releases Synaptics, its predecessors, parent, subsidiaries, affiliated entities, and the past and present officers, directors, employees, shareholders, agents, successors, representatives and assigns of each and all of them, and all persons acting by, through, under or in concert with them (hereinafter collectively referred to as “Releasees”), from any and all claims, charges, complaints, liabilities, and obligations of any nature whatsoever, which Long may have against Synaptics or any of the Releasees, whether now known or unknown, and whether asserted or unasserted, arising from any event or omission occurring prior to the Effective Date of this Agreement. This Release does not affect rights or claims that may arise after the Effective Date of this Agreement.

Without limiting the foregoing, this release includes any and all claims arising out of or which could arise out of the employment relationship between Long and Synaptics and Long’s termination, including but not limited to: (i) any and all claims under Title VII of the Civil Rights Act of 1964, as amended, the Americans with Disabilities Act, Section 1981 of the Civil Rights Act of 1866, as amended, the Age Discrimination in Employment Act, as amended, the Equal Pay Act, the Family and Medical Leave Act, the Fair Labor Standards Act, ERISA, COBRA, the Worker Adjustment and Retraining Notification Act, the California Family Rights Act, as amended, the California Fair Employment and Housing Act, as amended, the California Labor Code Section 132a, the California Disabilities in Employment Act, the National Labor Relations Act, as amended, state and local civil rights laws, California wage payment laws, and any and all similar laws in other states; (ii) any and all Executive Orders (governing fair employment practices) which may be applicable to Synaptics; (iii) any other provision or theory of law or equity; and (iv) any amendments or successor or replacement statutes to those listed hereinabove. Long understands and acknowledges that Title VII of the Civil Rights Act of 1964, ERISA, and state and local civil right laws, provide Long the right to bring actions against Synaptics if, among other things, Long believes he has been discriminated against on the basis of race, ancestry, color, religion, sex, national origin, medical condition, sexual orientation, disability, or benefit eligibility. With full understanding of the right afforded under these Acts, Long agrees that he will not file any action against Synaptics and/or Releasees based upon any alleged violation of these Acts or under any other theory of law or statute, including but not limited to, back pay, front pay, attorney’s fees, damages, interests, waiting time, penalties, reinstatement, or injunctive relief that could be assessed by any federal, state or local court, any administrative agency, or any other forum with competent jurisdiction.

This release may be pled as a complete bar and defense to any claim brought with respect to the matters released in this Agreement.

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(b) Synaptics on behalf of itself and its predecessors, parent, subsidiaries, affiliated entities, and past and present officers, directors, employees, shareholders, agents, successors, representatives and assigns of each and all of them, does hereby release and forever discharge Long from any and all claims, rights, demands, actions, causes of action, damages and liabilities of any and every kind, nature and character whatsoever, whether based on a tort, contract, statute, or any other theory of recovery, whether known or unknown, arising or that could have been asserted on or before the Effective Date of this Agreement, excluding claims of fraud, intentional tort, misappropriation of trade secrets, and breach of duties, including, without limitation, breaches of any duty or obligation imposed upon Long under his confidentiality obligations to Synaptics.

(c) Both Long and Synaptics acknowledge that California Civil Code Section 1542 states:

A GENERAL RELEASE DOES NOT EXTEND TO CLAIMS THE CREDITOR DOES NOT KNOW OR SUSPECT TO EXIST IN HIS OR HER FAVOR AT THE TIME OF EXECUTING THE RELEASE, WHICH IF KNOWN BY HIM OR HER MUST HAVE MATERIALLY AFFECTED HIS SETTLEMENT WITH THE DEBTOR.

Notwithstanding California Civil Code Section 1542, both Long and Synaptics hereby enter into the waiver and release as set forth in this Section 4 of this Agreement, subsections included, and waive all rights or defenses under Section 1542 of the California Civil Code. Long and Synaptics hereby agree that their respective rights under Section 1542 of the California Civil Code are hereby waived with respect to the claims released in Section 4 of this Agreement.

(d) Long acknowledges and agrees that the consideration he is receiving under this Agreement is sufficient consideration to support the release of all entities and persons identified in Section 4 of this Agreement, and that said consideration is in addition to anything of value to which Long is entitled.

(e) Long agrees and represents that he has not filed, or caused to be filed, any claim or charge with any adjudicative body, regulatory body, or agency arising out of his employment or termination of employment.

(f) Long specifically understands and acknowledges that the Age Discrimination in Employment Act of 1967, as amended, provides him the right to bring a claim against Synaptics if he believes that he has been discriminated against on the basis of age. Long understands the rights afforded under this Act and agrees that he will not file any such claim or action against Synaptics and/or Releasees, including, but not limited to, back pay, front pay, attorney’s fees, damages, reinstatements, or injunctive relief.

(g) Long does not intend to release claims that Long may not release as a matter of law, including, but not limited to, claims for indemnity under California Labor Code 2802.

(h) To the fullest extent permitted by law, at no time subsequent to the execution of this Agreement will Long pursue, or cause or knowingly permit the prosecution, in any state, federal or foreign court, or before any local, state, federal or administrative agency, or any other tribunal, any charge, claim or action of any kind, nature and character whatsoever, known or unknown, which Long may now have, has ever had, or in the future may have against Releasees, which is based in whole or in part on any matter covered by this Agreement. Notwithstanding the foregoing, nothing in this section shall prohibit Long from filing a charge or complaint with a government agency such as, but not limited to, the Equal Employment Opportunity Commission, the National Labor Relations Board, the Department of Labor, the California Department of Fair Employment and Housing, or other applicable state agency. However, Long understands and agrees that, by entering into this Agreements, he is releasing any and all individual claims for relief.

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